23 lines
408 B
Python
23 lines
408 B
Python
import fileinput
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import itertools
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N = 25
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numbers = []
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for line in fileinput.input():
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numbers.append(int(line))
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for i in range(N, len(numbers)):
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found = False
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for j in numbers[i - N:i]:
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for k in numbers[i - N:i]:
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if j == k:
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continue
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if j + k == numbers[i]:
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found = True
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if not found:
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print(numbers[i])
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break
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